class People {
	float hello(int a,int b) {
	return a+b;
	}
	float hello(long a,int b) {
	return a-b;
	}
	double hello (double a,int b) {
	return a*b;
	}
}
public class p81 {
	public static void main(String args[]) {
	People tom=new People();
	System.out.println(tom.hello(10,20));
	System.out.println(tom.hello(10L,20));
	System.out.println(tom.hello(10.0,20));
	}
}
	
	
